TS EAMCET · Maths · Probability
A box contains red, white and blue balls. If balls are drawn from the box at random one after the other without replacement, then the probability that they are red balls and white ball is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
A box contains 8 red, 3 white and 9 blue balls. nS=Number of ways selecting of 3 balls out of 20 balls=C320=20!17!×3!=18×19×203×2=19×3×20. nE=Number of ways of selecting 2 red balls and 1 white ball out of 20 given…
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